﻿/**
 *    Copyright 2012 Yohan Courbe
 *
 *  Licensed under the Apache License, Version 2.0 (the "License 
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *  
 *      http://www.apache.org/licenses/LICENSE-2.0
 *      
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

using System.Collections.Generic;
using System.Linq;
using System.Collections;
using System.Net;
using PacketDotNet;

namespace NetworkAnalyzer.Engines.Statistics
{
    public class ProtocolUsageList : IEnumerable
    {
        private readonly List<ProtocolUsage> _protocolUsagesList;

        public ProtocolUsageList()
        {
            _protocolUsagesList = new List<ProtocolUsage>();
        }

        public ProtocolUsage GetProtocolUsage(IPAddress remotehost, ushort port, 
            IPProtocolType ipProtocolType, ApplicativeProtocol applicativeProtocol)
        {
            foreach (var protocolUsage in _protocolUsagesList.Where(
                protocolUsage => protocolUsage.Match(
                    remotehost, port, ipProtocolType, applicativeProtocol)))
                return protocolUsage;

            var newprotocolUsage = new ProtocolUsage(remotehost, port, ipProtocolType, applicativeProtocol);
            _protocolUsagesList.Add(newprotocolUsage);
            return newprotocolUsage;
        }

        public IEnumerator GetEnumerator()
        {
            return _protocolUsagesList.GetEnumerator();
        }
    }
}
